Diaphanoidea

{{Short description|Superfamily of gastropods}}

{{Automatic Taxobox

| taxon = Diaphanoidea

| subdivision_ranks = Families

| subdivision = See text.

}}

Diaphanoidea is a taxonomic superfamily of small sea snails, marine opisthobranch gastropod mollusks or micromollusks in the Cephalaspidea, the headshield slugs and bubble snails.

Species in this superfamily have small, flimsy, almost globular shells, known as paper bubble gastropod shells.

This superfamily is not monophyletic.[https://dx.doi.org/10.1016/j.ympev.2015.04.011 Oskars T.R., Bouchet P. & Malaquias M.A. (2015). A new phylogeny of the Cephalaspidea (Gastropoda: Heterobranchia) based on expanded taxon sampling and gene markers. Molecular Phylogenetics and Evolution. 89: 130-150]